spark quenchers re series 275vac · spark quenchers *2 this series has european approvals which...

SPARK QUENCHERS

*2 This series has European approvals which assists in obtaining the CE Marking in accordance with the EC Low Voltage Directive

RE Series 275VAC

Operating temp. range: -40 ~ +100CoELECTRICAL SPECIFICATIONS

RE SERIES

• Our best price/performance series forhigh volume appliances.

• AC or DC applications.• Non-inductive, high pulse resistor.• Good Peak Pulse withstand capability.

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*2

MECHANICAL DIMENSIONS

MECHANICAL SPECIFICATIONS:

Case: Standoffs provided for improved cleanabilityCase Material: Polybutylene Terephthalate (FR-PBT)

UL-94 Flame Class V-OPotting Material: UL-94 Flame Class V-OLeads: Tinned Copper Clad Steel,Capacitor: Metallized Polypropylene Film

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L H T F d

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10021ER 10.0

)W4/1(0210.61 5.31 0.6 0.41 6.0 + 50.0

330021ER 330.0

1021ER 1.0 0.71 5.51 0.8 0.51 6.0 + 50.0

2021ER 2.0 )W2/1(74 5.42 0.71 5.8 5.22 57.0 + 70.0

L+0.5

T+0.5

φd

F+0.5

H+0

.515

min

*2

2-12

SPARK QUENCHERS

Safety Agency : Standard File No.

UL : UL-1414 (125VAC) E47474

CSA : C22.2 No. 0, 1 (125VAC) LR37404

SEV : IEC60384-14 II/EN132400 93.1 01313.04

SEMKO : IEC60384-14 II/EN132400 9415208

FIMKO : IEC60384-14 II/EN132400 178357-01

DEMKO : IEC60384-14 II/EN132400 302908

NEMKO : IEC60384-14 II/EN132400 P9410 2376

SafetyStandard

ClassModel

No.Resistance 30%

CapacitanceF 20%

Pulse condition (Max)PeakPulse

Voltage

Testvoltage

JISC5102

Insulationresistance

Peak toPeak(P-P)

Pulse widthRepetitivefrequency

Pulse width (sec)x

Frequency(Hz)

X2

AU120033120(‰W) 0.033

700Vmax

20msec.max

120(60)Hzmax

3(0.8)max

700Vmax

Line toLine 2000

Vdc1200 Vrms

50/60Hz2~5secLine toCase

2000Vrms50/60Hz60sec

Line to Line 15,000M min. Line to Case 100,000M min. (at 20 C 500VDC)

AU1201 120(‰W) 0.1 50msec.max 3(0.8)max AU047033 47(‰W) 0.033 20msec.max 6(1.5)max AU0471 47(‰W) 0.1 50msec.max 6(1.5)max AU010033 10(‰W) 0.033 20msec.max 10(2.5)max AU0101 10(‰W) 0.1 50msec.max 10(2.5)max

Fax Back Document #1201

AU SERIES

Our best price/performance series forhigh volume appliances

AC or DC applications

½ watt non-inductive, high pulseresistor

Good Peak Pulse withstand capability

ELECTRICAL SPECIFICATIONS

Operating temp. range : -40 ~ + 85°C

UL/CSA 125VAC 250VAC

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UL-94 Flame Class V-OPotting Material: UL-94 Flame Class V-OLeads: Tinned Copper Clad Steel,

Soldered Capacitor ElementCapacitor: Double Wound, Oil Impregnated,

Metallized Polyester Film

Add “C6” suffix to p/n for 6mm lead length.Other lead lengths available—consult factory.

All Dimensions in MM

SafetyStandard

Class Model No.Resistance 30%

CapacitanceF 20%

Dimensions

L H T F

X2

AU120033 120(‰W) 0.033

20.0 17.0 8.0 17.5

AU1201 120(‰W) 0.1AU047033 47(‰W) 0.033AU0471 47(‰W) 0.1AU010033 10(‰W) 0.033AU0101 10(‰W) 0.1


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SPARK QUENCHERS

SafetyStandard

Class Model No.Resistance

± 30%Capacitance

µF ± 20%

Pulse condition (Max)PeakPulse

Voltage

Testvoltage

JISC5102


Peak toPeak(P-P)

Pulse widthRepetitivefrequency

Pulse width (sec)x

Frequency(Hz)

X2

XA120033

120(¼W)

0.033

700Vmax

20msec.max120(60)Hz

max3(0.8)max

700Vmax

Line toLine

1200 Vrms50/60Hz2~5secLine toCase

2000Vrms50/60Hz60sec

Line to Line 15,000M min. Line to Case 100,000M min. (at 20°C 500VDC)

XA1201 0.1 50msec.max120(60)Hz

max3(0.8)max

XAB1201 0.1 50msec.max 120Hz max 3max

XAB1202 120(½W) 0.2 50msec.max 120Hz max 3max


XA SERIES

O Small case size with superiorperformance

O PWB mounting

O Broad application in businessequipment

O ¼ watt non-inductive, high pulseresistor

UL-CSA VDE125VAC, 250VAC


XAB SERIES

O Long insulated flexible wire leadsO AC or DC applicationsO ¼ or ½ watt non-inductive, high pulse

resistor



UL : UL-1414 E47474

CSA : CSA C22.2 No.0, No.1 LR37404/LR68886

VDE : VDE0565-1 10529-4670-1002

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SafetyStandard

Class Model No.Resistance ± 30%

CapacitanceµF ± 20%

Dimensions

L H T F

X2

XA120033

120(¼W)

0.033 17.0 14.0 7.0 15.0

XA1201 0.1 20.0 16.5 8.5 17.5

XAB1201 0.1 18.0 23.5 8.5 15.0

XAB1202 120(½W) 0.2 19.0 25.0 8.5 15.0







Case Material: Polybutylene Terephthalate (FR-PBT)UL-94 Flame Class V-O

Potting Material: UL-94 Flame Class V-OLeads: Tinned Copper Copper Wire

Polyvinylchloride (PVC) InsulationSoldered Capacitor Element

Capacitor: Double Wound, Oil Impregnated,Metallized Polyester Film

XA Series

XAB Series

Add “C6” suffix to p/n for 6mm lead length.Other lead lengths available—consult factory.

*Other lead lengths available—consult factory.


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SafetyStandard

ClassModel

numberResistance ± 30%

CapacitanceCx

(µF±20%)

Pulse condition (Max)Peakpulse

voltage

Testvoltage

JISC5102


Peakto

Peak(P-P)

Pulsewidth

Repetitivefrequency

Pulse width (sec)x

Frequency(Hz)

X2

XE01001 10(¼W) 0.01

800Vmax.

50msecmax.

120Hzmax.

4.5max

1200Vmax.

Line to Line1250 Vrms50/60Hz60 sec

Line toCase

2000 Vrms50.60Hz60 sec

Line to Line 15,000M min.

Except XE0105, 0475, 01010 5000M min.

Line to Case 100,000M min.

(at 20°C 500VDC)

XE04701 47(¼W) 0.01 3.0max

XE12001 120(¼W) 0.01 1.5max

XE22001 220(¼W) 0.01 0.8max

XE47001 470(¼W) 0.01 0.45max

XE010033 10(¼W) 0.033 3.0max

XE047033 47(¼W) 0.033 2.0max

XE120033 120(¼W) 0.033 1.0max

XE220033 220(¼W) 0.033 0.5max

XE470033 470(¼W) 0.033 0.25max XE0101 10(½W) 0.1 1.5max

XE0471 47(½W) 0.1 1.0max

XE1201 120(½W) 0.1 0.45max

XE2201 220(½W) 0.1 0.2max

XE4701 470(½W) 0.1 0.1max

XE0102 10(½W) 0.2 0.5max

XE0472 47(½W) 0.2 0.3max

XE1202 120(½W) 0.2 0.15max

XE2202 220(½W) 0.2 0.08max

XE0103 10(1W) 0.3 0.2max XE0473 47(1W) 0.3 0.1max

XE1203 120(1W) 0.3 0.05max

XE2203 220(1W) 0.3 0.02max

XE0105 10(1W) 0.5 0.18max

XE0475 47(1W) 0.5 0.05max

XE01010 10(1W) 1.0 0.15max


XE SERIES

O Our best size/performance serieswith broad applications in industrialcontrols

O Widest safety agency approvals

O High Peak Pulse withstand capability

O Large product selection range with¼, ½, and 1 watt non-inductive, highpulse resistors

250 VAC

ELECTRICAL SPECIFICATIONS Operating temp. range : -40 ~ + 85°C


UL : UL-1414 E47474


VDE : VDE0565-1 10529-4670-1002

SEMKO : SS443-04-14 8705137

DEMKO : Heavy Current Regulations Section 21 and IEC384-14 88929EC

NEMKO : NEMKO 132/85 E40433/E40434

EL : E384/14-82 116910-01, -02

SEV : SEV1055 87.1 01343.02

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Add “C6” suffix to p/n for 6mm lead length.Other lead lengths available—consult factory.MECHANICAL DIMENSIONS

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XE0103 ~ XE01010All Dimensions in MM

SafetyStandard

Class Model No.Resistance ±30%

Capacitance(µF±20%)

DimensionsL H T F d

X2

XE01001 10(¼W)

0.01 17.0 14.0 7.0

15.0 0.6±0.05

XE04701 47(¼W)

XE12001 120(¼W) XE22001 220(¼W)

XE47001 470(¼W)

XE010033 10(¼W)

0.033 17.5 15.0 8.0

XE047033 47(¼W)

XE120033 120(¼W)

XE220033 220(¼W)

XE470033 470(¼W)

XE0101 10(½W)

0.1 23.5 17.5 8.5 20.0

0.8±0.07

XE0471 47(½W)

XE1201 120(½W)

XE2201 220(½W)

XE4701 470(½W)

XE0102 10(½W)

0.2 30.0 20.0 11.027.5

XE0472 47(½W) XE1202 120(½W)

XE2202 220(½W)

XE0103 10(1W)

0.3

40.0 28.0 16.0

XE0473 47(1W)

36.51.0±0.10

XE1203 120(1W)

XE2203 220(1W)

XE0105 10(1W)0.5

XE0475 47(1W)

XE01010 10(1W) 1.0 47.0 33.5 22.0 43.5

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SPARK QUENCHERS

SafetyStandard

ClassModel

numberResistance

±30%

CapacitanceCx

(µF±20%)


voltage

Testvoltage

JISC5102


Peak toPeak(P-P)

Pulsewidth

Repetitivefrequency

Pulse width (sec)x

Frequency(Hz)

X2

XEB01001 10(¼W)

0.01

800Vmax.

50msecmax.

120Hzmax.

4.5max

1200Vmax.

Line toLine

1250 Vrms50/60Hz60 sec.

Line toCase

2000 Vrms50/60Hz60 sec.


Except XEB0105, 0475, 01010 5000M min.


(at 20°C 500VDC)

XEB04701 47(¼W) 3.0max

XEB12001 120(¼W) 1.5max

XEB22001 220(¼W) 0.8max

XEB47001 470(¼W) 0.45max

XEB010033 10(¼W)

0.033

3.0max

XEB047033 47(¼W) 2.0max XEB120033 120(¼W) 1.0max

XEB220033 220(¼W) 0.5max

XEB470033 470(¼W) 0.25max

XEB0101 10(½W)

0.1

1.5max

XEB0471 47(½W) 1.0max

XEB1201 120(½W) 0.45max

XEB2201 220(½W) 0.2max XEB4701 470(½W) 0.1max

XEB0102 10(½W)

0.2

0.5max

XEB0472 47(½W) 0.3max

XEB1202 120(½W) 0.15max

XEB2202 220(½W) 0.08max

XEB0103 10(1W)

0.3

0.2max

XEB0473 47(1W) 0.1max XEB1203 120(1W) 0.05max

XEB2203 220(1W) 0.02max

XEB0105 10(1W)0.5

0.18max

XEB0475 47(1W) 0.05max

XEB01010 10(1W) 1.0 0.15max


XEB SERIES

O Flexible wire leads with mountingtabs on some models

O Our best performance series withbroad applications in motor andcontrols

O Large product selection range with¼, ½, and 1 watt non-inductive, highpulse resistors

250 VAC

ELECTRICAL SPECIFICATIONS Operating temp. range : -40 ~ + 85°C

h


UL : UL-1414 E47474


VDE : VDE0565-1 10529-4670-1002

SEMKO : SS443-04-14 8705137

DEMKO : Heavy Current Regulations Section 21 and IEC384-14 88929EC

NEMKO : NEMKO 132/85 E40433/E40434

EL : E384/14-82 116910-01, -02

SEV : SEV1055 87.1 01343.02

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UL-94 Flame Class V-OPotting Material: UL-94 Flame Class V-OLeads: Tinned Stranded Copper Wire




Other lead lengths available—consult factory.MECHANICAL DIMENSIONS

XEB...01 ~ XEB...2 XEB...3 ~ XEB...10

SafetyStandard

Class Model No.Resistance ±30%

Capacitance(µF±20%)

DimensionsL H T F

X2

XEB01001 10(¼W)

0.01

16.0

20.0

8.0 12.5

XEB04701 47(¼W)

XEB12001 120(¼W) XEB22001 220(¼W)

XEB47001 470(¼W)

XEB010033 10(¼W)

0.033 18.0

XEB047033 47(¼W)

XEB120033 120(¼W)

XEB220033 220(¼W)

XEB470033 470(¼W)

XEB0101 10(½W)

0.1 19.0 25.0 8.5 15.0

XEB0471 47(½W)

XEB1201 120(½W)

XEB2201 220(½W)

XEB4701 470(½W)

XEB0102 10(½W)

0.2 21.5 30.0 11.0 17.0 XEB0472 47(½W) XEB1202 120(½W)

XEB2202 220(½W)

XEB0103 10(1W)

0.3

30.0 39.0 16.0 26.0

XEB0473 47(1W)

XEB1203 120(1W)

XEB2203 220(1W)

XEB0105 10(1W)0.5

XEB0475 47(1W)

XEB01010 10(1W) 1.0 37.0 48.0 22.0 33.0

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SPARK QUENCHERS


CRE SERIES

O Broad use in industrial applications

O Flexible wire leads

O External mounting tab

O ½ watt non-inductive, high pulseresistor

250 VAC


3CRE/6CRE

O For use in three phase industrialapplications

O Two different circuit configurationsfor wide use conditions

O Flexible wire leads and externalmounting tab

O ½ watt non-inductive, high pulseresistor

3CRE 6CRE

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UL : UL1283 E78644

CRE

SafetyStandard

Model No.Capacitance

Cx(µF±20%)

Resistance ±30%


voltage

Testvoltage

JISC5102


Peak toPeak(P-P)

Pulsewidth

Repetitivefrequency

Pulse width (sec)x

Frequency(Hz)

CRE-10201 0.1 200(½W)

700Vmax

50msec.max

360Hzmax

0.45max

800Vmax

Line toLine

625Vrms50/60Hz60sec.

Line toCase


Line to Line 10,000M min. Line to Case 10,000M min.

(at 20°C 500 VDC)

CRE-20151 0.2 150(½W) 50msec.max 0.15max

CRE-30680 0.3 68(½W) 70msec.max 0.1max

CRE-50500 0.5 50(½W) 70msec.max 0.07max

3CRE-30680 0.3/1phase 68(½W)/1phase 70msec.max 0.1max



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Potting Material: UL-94 Flame Class V-OLeads: Tinned Stranded Copper Wire




CRE

6CRE

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3CRE

SafetyStandard


(µF±20%)Resistance ±30%

DimensionsL H T F

CRE-10201 0.1 200(½W)23.0 26.0 14.0 13.0

CRE-20151 0.2 150(½W)

CRE-30680 0.3 68(½W)25.0 32.0 16.0

15.0 CRE-50500 0.5 50(½W)

3CRE-30680 0.3/1phase 68(½W)1 phase44.0 35.0 26.0

3CRE-50500 0.5/1phase 50(½W)1 phase

6CRE-50500 0.5/1phase 50(½W)1 phase 48.0 35.0 26.0 -


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SPARK QUENCHERS

SafetyStandard


Cx(µF±20%)

Resistance ±30%


voltage

Testvoltage

JISC5102


Peakto

Peak(P-P)

Pulsewidth

Repetitivefrequency

Pulse width (sec)x

Frequency(Hz)

CRH-10680 0.1 68(6W)

1000Vmax

50msec.max

720Hz.max

1.0max

1500Vmax

Line toLine


Line toCase




(at 20°C 500 VDC)

CRH-20470 0.22 47(6W) 70msec.max 0.3max

CRH-30330 0.33 33(6W) 100msec.max 0.2max

CRH-50270 0.47 27(10W) 100msec.max 0.2max

3CRH-30330 0.33/1phase 33(6W)/1phase 100msec.max 0.2max

3CRH-50270 0.47/1phase 27(10W)/1phase 100msec.max 0.2max


CRH SERIES

O 500 VAC rating for application in highvoltage phase control

O Flexible wire leads with externalmounting tab

O 6 and 10 watt non-inductive, highpulse resistors

500 VAC


3CRH SERIES

O 500VAC rating for application inhigh voltage three phase control

O Flexible wire leads and externalmounting tab

O 6 and 10 watt non-inductive, highpulse resistors


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UL : UL1283 E78644

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SafetyStandard


(µF±20%)Resistance ±30%

DimensionsL H T F

CRH-10680 0.1 68(6W)30.0

57.0

15.018.0 CRH-20470 0.22 47(6W)

CRH-30330 0.33 33(6W)20.0

CRH-50270 0.47 27(10W) 40.0 28.0

3CRH-30330 0.33/1phase 33(6W)1 phase 46.062.0

32.0 13.0

3CRH-50270 0.47/1phase 27(10W)1 phase 56.0 40.0 18.0



Potting Material: UL-94 Flame Class V-OLeads: Tinned Stranded Copper Wire




CRH 3CRH

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SPARK QUENCHERS


The technical data provided by Okaya Electric Industries Co., Ltd., and/or Okaya Electric America,Inc. is designed to assist a potential buyer’s engineer in applying these products to electrical,electronic, and electromechanical applications.The information provided in this catalog, as well as any additional data supplied by Okaya orOkaya representatives, is for general use only to assist the buyer in making its own independentdecision as to the suitability of the products for the buyer’s intended use and application.Except for any limited warranties contained in Okaya Electric America, Inc.’s Terms and Conditions,OKAYA DISCLAIMS WITH RESPECT TO THEIR GOODS AND DATA AND INFORMATIONRELATED TO THEM, ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIEDWARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE.The specifications contained in this catalog are subject to change without notice.

OSafety StandardsOkaya spark quenchers have been recognized by the following safety standards organizations:

O Electrical apparatus are classified roughly into two categories, i.e., (a) household appliances and (b) office appliancesincluding office automation (OA) and others.

O The standards for noise suppression capacitors to be used in the household appliances are more strict than thosein the office appliances and others.

O The products enumerated in the following pages (with a few exceptions) have been approved under standardsapplicable to the household appliances, so that you may use them for almost all applications.

O In order to avoid any accidents in machine applications which may experience unexpected abnormal surge voltage,or which are subjected to continuous 24-hour use, it is necessary to build in an extra measure of reliability. Here,the strict test conditions conducted by the above-mentioned safety standards organizations can be considered asone of the criteria from a reliability point of view.

Applicable StandardOrganization (country)

Household Appliances Office Appliances and others

IEC PUB 65 PUB 950

UL (USA) UL-1414 (capacitor) UL-1283 (filter)

CSA (Canada) C22.2 No. 0 No. 1 C22.2 No.8

VDE (Germany) IEC384-14II(EN132400) IEC384-14II(EN132400)

SEV (Switzerland) IEC384-14II(EN132400) IEC384-14II(EN132400)

BS (Great Britian) IEC384-14II(EN132400) IEC384-14II(EN132400)

SEMKO (Sweden) IEC384-14II(EN132400) IEC384-14II(EN132400)

DEMKO (Denmark) IEC384-14II(EN132400) IEC384-14II(EN132400)

NEMKO (Norway) IEC384-14II(EN132400) IEC384-14II(EN132400)

EI (Finland) IEC384-14II(EN132400) IEC384-14II(EN132400)

ÖVE (Austria) ----------- IEC384-14II(EN132400)

IMQ (Italy) ----------- IEC384-14II(EN132400)

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OOOOO SPARK QUENCHERS INTRODUCTIONRC NETWORKS

Recent developments in electronic equipment haveshown the following trends:

O Increasing demands for numerical controlmachines, robotics and technically advancedappliances are requiring progressive electronictechnologies.

O When employing integrated circuit andmicrocomputer technology, today’s equipmentis required to perform multifunctions in limitedsize.

O The denser the installation of components, themore the components must be miniaturized andof lighter weight.

O As a result, the following problems arise:

1) Functional limits of magnetic relays andswitches have narrowed due to increasingcontact amperage.

2) Miniaturization of electronic componentshas reduced their dielectric strength.

3) Circuit noise has increased as a result ofthe coexistence of signal and power lines.

4) Safety standards for electronic equipmentand components have become increasinglyrestrictive.

Some key factors affecting circuit performance are:

1) Arcing between relay and switch contactsresult in wear and binding.

2) Contact arcing, results in high frequencynoise and abnormal high voltages.

3) The generation of back electromotive force(EMF) is due to the self-inductance of inductiveloads.

4) The occurrence of high frequency noise isthe result of contact chatter in magnetic relays andswitches.

Back EMF, due to self-inductance, affectsSilicon Control Rectifiers (SCRs) and Solid-stateRelays (SSRs) and can result in the breakdown ofother semi-conductor devices. Power line surgesmust also be carefully considered. Either may bea contributing factor in equipment malfunctions,failures and in extreme cases fire and/or electricalshock.

To illustrate these factors, consider that relaycontact chatter is capable of inducing oscillationsof several Kilohertz, contact arcing frequencies ofseveral Megahertz and amplitudes 10 to 20 timesnormal circuit voltages. Voltage surges fromexternal sources may approach thousands of volts.

To protect electronic equipment against costlyfailures or malfunctions, Okaya has developedadvanced components to suppress contact arcingand filter unwanted electrical noise.

OOOOO DETERMINING RC VALUE

In general, the RC determining formula isregarded as quite complex, but since the RCcombination has the decisive effect of integratingthe rapid changes of the waveform to a smoothedaverage, the determination of RC values bycomplex formulas becomes unnecessary.

It is possible to select a suitable OKAYASpark Quencher using the chart or the formulasshown below. Keep in mind that there is no oneexact value of Spark Quencher which will satisfyall applications. The chart and formula are guide-lines to give the user a starting point from which towork. The final selection must be evaluated in theapplication to determine its acceptability.

C = I2

10

R = V10 (1+ 50

V) I

C = Capacitance in MFD

I = Load Current in Amps

R = Resistance in Ohms

V = Source Voltage

LOAD CURRENT - AMPERES

0.05 0.1 0.2 0.3 0.5 1.0 2.0 3.0 5.0

SourceVoltage

125VACor

125VDC

0.01+

470

0.01+

470

0.01+

220

0.01+

120

0.022+

120

0.1+47

0.3+47

0.5+47

1.0+10

MFD+

OHMs R+CValues250VAC

or250VDC

0.01+

470

0.01+

470

0.01+

470

0.01+

470

0.022+

120

0.1+

120

0.3+

120

0.5+47

1.0+47

MFD+

OHMs

2-4

SPARK QUENCHERS

Spark Quenchers are easily selectable elec-tronic components designed to prevent or sub-stantially minimize the occurrence of arcing andnoise generation in relay and switch contacts.

Spark Quenchers consist of speciallydesigned capacitors and resistors connected inseries. Spark discharges and induced noise areabsorbed over a wide range by the accumulationcharacteristic and impedance of the capacitor,while the RC time constant delays and averagessurge voltage and oscillations.

OOOOO EFFECT OF SPARK QUENCHER

At the moment of switch opening, the RCcombination absorbs and suppresses the energyof the arc by letting it bypass the switch.

Arc suppression

The RC combination absorbs the high frequencyoscillations caused by mechanical vibrationssuch as relay contact chattering. Similarly theoscillations created by arcing are also averagedand suppressed by the RC combinationregardless of their origin.

Damping oscillation

With back electromotive force due to self-inductance, the surge voltage peak issuppressed by conducting it through the RCcircuit on the low impedance side. The peak isabsorbed by the capacitance of RC. The wave-form is averaged and smoothed by the timeconstant of the RC; thus generated noise iseliminated or substantially minimized.

Back electromotive force suppression

The RC combination allows the dv/dt of the “on”and “off” operation of thyristors or similar devicesto decrease; thus surge voltages are suppressedand semi-conductor elements are protected.Even in the case of zero crossing circuits, suchas AC circuits, protection is necessary sinceharmonic noise occurs when there is a gapbetween phases or current and voltage of theload circuit.

Dv/dt suppression

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OKAYA Spark Quenchers have the followingcharacteristics which make it possible to easilyuse them in a wide range of applications.

1) The Overload capacity is large.

2) They are not polarized; thus can be used inboth AC an DC circuits.

3) They have a favorable effect on surgevoltage and accompanying oscillations causedby contact chatter.

4) They are effective against spuriouspotentials having magnitudes below circuit voltage.

5) They offer a high degree of protection forsemiconductor devices, and as thyristors andSCRs.

6) They improve the dv/dt ratio.

O O O O O OUTLINE OF CAPACITOR CLASS RATINGS

Capacitors are classified by the IEC into thefollowing categories (these designations are usedby most European countries):

Class Y: Capacitors used in applications wheredamage to the capacitor may involve the dangerof electrical shock.

Class X: Capacitors used in applications wheredamage to the capacitor will not lead to the dangerof electrical shock.

European Safety Agencies subdivide Class Xinto X1, X2 and X3 classifications. The test criteriafor these subclasses is shown in the table.

µF 10 27 33 47 50 68 100 120 150 160 200 220 470 500

0.01 XE XEB

XE XEB

XE XEB

XE XEB

XE XEB

0.033

XE XEB AU

XE XEB AU

XA XE XEB AU

XE XEB

XE XEB

0.1

XE XEB AU

XE XEB AU

CRH XA XAB XE XEB AU

CRE XE XEB

XE XEB

0.2 XE XEB

XE XEB

XAB XE XEB

CRE XE XEB

0.22 CRH

0.3 XE XEB

XE XEB

CRE 3CRE

XE XEB

XE XEB

0.33 CRH 3CRH

0.47 CRH 3CRH

0.5 XE XEB

XE CRE 3CRE 6CRE

1.0 XE XEB

RC COMBINATION TABLEh

m

SubclassPeak Voltage

on Service (kV)Peak Voltage Test1.2/50 µsec. (kV)

X1 >1.2kV 4.0kV 4.0kV

X2 2.5kV 2.5kV

X3 1.2kV Nonem

m

2-6

SPARK QUENCHERS

OOOOO GENERAL CONSTRUCTION

Spark Quenchers must have the capacity tostore surge voltages and current energy, and affordprotection against inductively induced potentials.The dielectric material of the OKAYA capacitors,used in Spark Quenchers, affords a very highdegree of voltage withstand strength. All resistorsare non-inductive solid slug type to insure a highdegree of protection against pulse potentials. Toprovide additional protection for equipment andusers, especially when these components are usedin AC applications, all OKAYA Spark Quenchersare packaged in cases which meet UL-94 FlameClass V-O.

OOOOO SAFETY STANDARDS

Safety standards for capacitors used in con-junction with AC power sources have recently beenadopted by many world wide standards agencies.OKAYA Spark Quenchers are fully tested to thesestandards (see Chart). As well, Okaya is able tooffer some products with 500 VAC ratings.

OOOOO APPLICATIONS

A) Protection for contacts and from noiseduring switching operations of equipment such asradio, TV, copiers, mixers, coffee grinders, dryers,tool machine equipment, etc.

B) Protection of electronic instrumentsduring operation of relays, solenoids, motors, etc.

C) Electrical noise protection of semiconductordevices during control of triacs, thyristors, motors,welders, illumination equipment, etc.

LineVoltage Safety Standard Lead Type Forms Model

125V/250V AC Bare wire/Flex PVC wire a/b XA series/XAB series

125V/250V AC Bare wire a AU series250V AC Bare wire a XE series

250V AC Flex PVC wire b XEB series

250V AC Flex PVC wire d CRE series

250V AC Flex PVC wire e 3CRE series (3 phase delta connection)

500V AC Flex PVC wire c CRH series

500V AC Flex PVC wire f 3CRH series (3 phase delta connection)

250V AC Flex PVC wire g 6CRE series (3 individual circuits)

OOOOO FORM

OOOOO APPLICATION EXAMPLES

a. b. c. d. e. f. g.

Standard example in AC circuits.

Standard example in DC circuits.For phase control circuits

employing SCR or TRIAC, etc.

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OOOOO DESIGN CAUTIONS

1) Using OKAYA Spark Quenchers will helpprevent abnormal operation due to electrical noiseand/or surge pulses. It is not recommended thatthese devices be used in circuits with frequenciesgreater than 70 Hz. When used in 3-phase, fullwave rectified applications, care must be taken toinsure that the Spark Quencher does not self heatby more than 5 degrees centigrade or permanentdamage to the Spark Quencher may occur.

2) When protecting contacts feeding small cir-cuit loads, it is recommended that the SparkQuencher be placed in parallel with the load, ratherthan the contacts, for the most effective applica-tion.

3) In high speed circuits, the addition of aSpark Quencher may slow the response time ofthe circuit. For best response characteristics, donot use a larger Spark Quencher than is absolutelynecessary to suppress the noise level.

4) Spark Quenchers should be connected asclose as possible to the noise source. Excessivelead length may allow abnormal oscillation and/ordecrease energy absorption capacity.

5) When a thyristor, triac or invertor circuit is tobe protected by a Spark Quencher, care must betaken that high harmonic currents do not causeover heating of the Spark Quencher resistor. Ifheating occurs, we suggest the employment of aSpark Quencher with a lower resistance. The SparkQuencher must not self heat by more than 5 degreescentigrade. In invertor applications, it isrecommended that an OKAYA noise suppressioncapacitor be used across the power lines, insteadof the Spark Quencher.

6) While it may appear effective to protectcontacts with a capacitor only, the capacitordischarge current will cause accumulative damageto the contacts when they close. The propertechnique is to apply a Spark Quencher across eitherthe contacts or the load.

OOOOO EXPRESSION OF RATED VOLTAGE

The rated voltage of OKAYA Spark Quenchersis expressed by the steady-state (line) voltage rat-ing. They can, however, withstand much highervoltages from power surges. In this catalog, themaximum voltage (including the line voltage) thatthe Spark Quenchers can withstand is expressedas the “Peak Pulse Voltage”. For example, the XEseries is rated 250VAC RMS (350VAC Peak) maxi-mum line voltage, but can withstand surge volt-ages up to 1200VAC (including Peak line voltage).“Pulse Condition” means the maximum voltage thatcan be input between terminals of the SparkQuencher (excluding line voltage) during operation.For example, when the XE series is used in a250VAC RMS (350VAC Peak) line voltage applica-tion, it can withstand surge voltages up to 800VAC(P-P) above the Peak line voltage. The followingdrawing shows examples of both “Peak Pulse Volt-age” and “Pulse Condition” for clarification.

“Pulse Condition”

1200

1000

800

600

400

200

0

-200

-400

-600

-800

-1000

**

*

*

**

**

*

*

*

Pulse Condition (Surge pulse p.p.)

Peak Pulse Voltage (Peak line voltage plus surge pulse)

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SPARK QUENCHERS

OOOOO PERFORMACE CHARACTERISTICS

Temperature Endurance Damp Heat Endurance Temperature Characteristics

OOOOO TEST CONDITIONS

Temperature Endurance:While operating at maximum

rated temperature and at 125%of rated voltage, input the tablevoltages four times per hour for0.1 second.

Damp Heat Endurance:

60°C, 90~95% RH100% Rated Voltage

Temperature Characteristics:

-50°C to~100°C100% Rated Voltage

Model Applied voltage

AU, CRE 880 Vrms

XE 1000 Vrms

CRH 1500 Vrms

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OOOOO EXAMPLES OF ABSORPTION OF NOISE

The following illustrations show examples ofthe operation of a variety of commonly usedmagnetic relays and contactors with and without aSpark Quencher. The ability of the Spark Quencherto integrate peak power surges and suppress highfrequency oscillations is visibly demonstrated.

Without a Spark Quencher in the circuit, surgevoltage becomes 10 to 30 times larger than thenormal circuit voltage and the noise frequencyapproaches 10 MHz. Spark Quenchers effectivelyabsorb high frequency oscillations induced bycontact chattering and attenuate peak surgevoltages.

In general, inductive load circuit malfunctionsoccur as a result of component dielectric breakdowninduced by excessive peak potential, orunnecessary radiation accompanied byoccurrences of high frequency oscillations due torapid changes of voltage. Spark Quenchers areeffective in preventing both types of electrical noise.

In the following illustrations of noise waves,note that the time base is quite small comparedwith the normal 50/60 Hz line (16-20 msec.).

Example 1. Magnetic relay closed in 12VDC circuit.

Without Spark Quencher With XE-1201

Example 2. Magnetic relay opened in 12VDC circuit.


0.1mSec/div

100V

/div

0.1mSec/div

100V

/div

0.1mSec/div

100V

/div

0.1mSec/div

100V

/div

2-10

SPARK QUENCHERS

Example 3. Magnetic relay opened in 120VAC circuit.


Example 4. Large magnetic relay opened in 120VAC circuit.Without Spark Quencher With XE-1202

Example 5. Magnetic contactor opened in 240VAC circuit.Without Spark Quencher With XE-1202

Example 6. Rotary solenoid opened in 120VAC circuit.Without Spark Quencher With XE-1201

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.1mSec/div

500V

/div

0.1mSec/div

500V

/div

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Example 7. Motor timer opened in 120VAC circuit.

Without Spark Quencher With AU-1201

Example 8. Induction motor opened in 240VAC circuit.Without Spark Quencher With XE-1201

Without Spark Quencher With XE-120033 With XE-1202

Two of the illustrations in example 8 are theresult of the switch opening without SparkQuencher protection. The variation in the waveforms is due to the difference in the AC voltage atthe instant of circuit opening.

Three of the noise-graph illustrations are theresult of the switch opening with Spark Quencherprotection. Noise that occurs at the time of loaddisconnect is absorbed by the LRC loop. Propor-tionally as the capacitor becomes larger, thenoise prevention becomes more effective.

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

0.2mSec/div

500V

/div

spark quenchers re series 275vac · spark quenchers *2 this series has european approvals which...

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